Common Barklouse vs Black-striped Flower Longhorn

Side-by-side species comparison

Attribute Common Barklouse Black-striped Flower Longhorn
Scientific Name Cerastipsocus venosus Strangalia attenuata
Order Psocoptera Coleoptera
Family Psocidae Cerambycidae
Size 4.0-6.0 mm 14-20 mm
Habitat Woodlands Woodlands
Diet Wood Feeders Wood Feeders
Regions North America Europe, Turkey, Caucasus, Iran
Conservation Not Evaluated Least Concern

Common Barklouse

A large winged barklouse found in herds on tree trunks in eastern North America. It has prominent veined wings and feeds on algae and lichens.

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Did You Know?

These barklice form conspicuous herds of up to several hundred individuals that march across tree trunks in unison.

Black-striped Flower Longhorn

A slender, wasp-like flower longhorn with yellow elytra bearing longitudinal black stripes. Found in deciduous woodlands across Europe and the Middle East. Adults are active fliers that visit a wide range of flowers.

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Did You Know?

Its narrow waist and striped pattern make it one of the most effective wasp mimics among European flower longhorns.